Hi, as for a tip or tips I would say find a more experienced player and follow them, ask them what they need done that you could help with, this will also help you learn the lay out of the field. I remember the first time I was out there I was doing recon and thank god I had printed off my self a map because I had no idea were anything was. One other thing be respectful of more experienced players keep out of their way if they are executing a maneuver ect. I don't want anyone spraying rounds at the enemy from 150ft out if I am leap frogging up close to them with my unit. so in short communicate. Good communication will almost always ensure victory over the enemy ( unless they are better ).
Well I hope this helped see you there.